# array-union > Create an array of unique values, in order, from the input arrays ## Install ``` $ npm install array-union ``` ## Usage ```js import arrayUnion from 'array-union'; arrayUnion([1, 1, 2, 3], [2, 3]); //=> [1, 2, 3] arrayUnion(['foo', 'foo', 'bar']); //=> ['foo', 'bar'] arrayUnion(['🐱', '🦄', '🐻'], ['🦄', '🌈']); //=> ['🐱', '🦄', '🐻', '🌈'] arrayUnion(['🐱', '🦄'], ['🐻', '🦄'], ['🐶', '🌈', '🌈']); //=> ['🐱', '🦄', '🐻', '🐶', '🌈'] ``` ---